Seoul’s underage Little Monsters were out of luck earlier this week when Lady Gaga’s “Born This Way Ball” concert became an adults-only event.

According to the BBC, a small group of Christians staged a rally outside the South Korean capitol’s Olympic Stadium ahead of the performance. Activists in Seoul had been protesting the concert for a week, calling the 26-year-old’s music and performances “obscene,” with the potential to “taint” young people.

One group calling itself the Civilians Network against the Lady Gaga Concert said her show was “too homosexual and pornographic.”

Rev. Yoon Jung-hoon, who organized the group, told Reuters the Christian Council of Korea “will take all measures such as boycotting Hyundai Card [a sponsor of Gaga’s tour] to root out this kind of obscene culture.”

Joon attended the concert to “monitor” the performance for homosexual content.

Gaga is an advocate for gay rights and empowering people of all sexual orientations. “I can hear you, Korea,” the pop star tweeted Thursday night. “I’m shaking.”

Lady Gaga.

Left: Kim Hee-Chul (Super Junior Music Group). Fans in Gaga-inspired dress gather before the pop star kicks off her "Born This Way Ball" world tour at the Seoul Olympic Stadium in Seoul, South Korea, on April 27. Photo Credit: MSNBC - Kim Hee-Chul - EPA